geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

New morphological aspects of cephalodium formation in the lichen Lobaria pulmonaria Lecanorales , Ascomycota


, : New morphological aspects of cephalodium formation in the lichen Lobaria pulmonaria Lecanorales , Ascomycota. The Lichenologist 45(01): 77-87

Cephalodia were investigated on young and mature thalli of Lobaria pulmonaria. Cephalodia originate from contact between hyphae and cyanobacteria on the upper or lower cortex or, less frequently, in the apical zone. Young thalli were found to associate with cyanobacteria even in the anchoring zone. Cephalodia formed on the young thalli or the anchoring hyphae share the same phenotypic characteristics. In spite of being composed of paraplectenchymatous hyphae, the cortex of mature thalli preserves a considerable plasticity, enabling the formation of cephalodia. The cyanobacterial incorporation process begins with cortical hyphae growing out towards adjacent cyanobacterial colonies, enveloping them and incorporating them into the thallus. The incorporation process is the same on the upper and the lower cortex. Early stages of cephalodia are usually found in young lobes, whereas in the older parts of the thallus only mature cephalodia are found.

US$19.90

DOI: 10.1017/s0024282912000631


Other references

Mileev V.S. (Mileyev V.S.; Nikishin A.M.; Rozanov S.B., 1987: The thrust-nappe structure of the Triassic-Jurassic complex of the Crimea Mountains. International Union of Geodesy and Geophysics, General Assembly 19, Vol

Smith, R.C., 1968: Growth and nucleic acid synthesis of Salmonella typhimurium inhibited by alpha-methylmethionine. Canadian Journal of Microbiology 14(4): 331-335

Petersen, R.K.; Christensen, K.B.; Assimopoulou, A.N.; Fretté, X.; Papageorgiou, V.P.; Kristiansen, K.; Kouskoumvekaki, I., 2011: Pharmacophore-driven identification of PPARγ agonists from natural sources. In a search for more effective and safe anti-diabetic compounds, we developed a pharmacophore model based on partial agonists of PPARγ. The model was used for the virtual screening of the Chinese Natural Product Database (CNPD), a library of plan...

Bellomo, R.; Tetta, C.; Ronco, C., 2003: Coupled plasma filtration adsorption. Severe sepsis and septic shock are perhaps the major cause of morbidity and mortality in Intensive Care. Their pathogenesis is only partly understood. Circulating peptides and lipid-derived substances (so-called mediators), however, appear to part...

Laurie, D.A.; Palmer, R.W.; Hultén, M.A., 1982: Chiasma derived genetic lengths and recombination fractions: chromosomes 2 and 9. An investigation of chiasms distribution in chromosomes 1, 2 and 9 in the human male has shown that each arm consistently has a characteristic and highly non-random distribution of recombination. The chiasma frequencies of chromosome regions corre...

Srivastava, J.; Vankar, P.S., 2011: Canna indica flower: New source of anthocyanins. In this study the red flowers of Canna indica (Cannaceae) were extracted by using sonicator and isolation of anthocyanins have been carried out. Four anthocyanin pigments have been isolated apart from quercetin and lycopene. They are Cyanidin-3-O-...

Steiner, C.A.; Powe, N.R.; Anderson, G.F.; Das, A., 1997: Technology coverage decisions by health care plans and considerations by medical directors. Decisions made by private health care plans as to whether to cover new medical technology have a significant impact on access, diffusion, and costs. This study describes the variation in health plan coverage of different laser technologies and the...

Pilz, W.; Hörlein, H.; Stelzl, E., 1966: Research on the ferments of human blood. XII. The role of an arylesterase fraction from the liver in human fat metabolism. Hoppe-Seyler's Zeitschrift für Physiologische Chemie 345(2): 65-79

Wiebe, E.R., 1984: Subcuticular tears in a rape victim. Canadian Family Physician Medecin de Famille Canadien 30: 990-990

Morse H.G.; Odom L.F.; Castro R.; Hays T.; Blake M.; Vannais D.; Robinson A., 1987: Methodology of premature chromosome condensation and its potential for relapse prediction in acute leukemia of children and adolescents. Premature chromosome condensation has been examined as a method for measuring the proliferative potential of bone marrow cells derived from children with acute leukemia with the intention of findings a predictor of relapse. A proliferative potenti...